I am looking for a 10 ft non conductive mast to mount two 13b2 antennas on.One vertical on horizontal.Have thought about a 1 1/2" schedule 80 PVC , but I don't think that will hold up without a dowel inside.Any suggestions.

Put the horizontally polarized antenna on a metallic mast (it will only marginally disturb the pattern). Then extend the mast from there with a non-metallic material for the vertically polarized antenna.

Put the horizontally polarized antenna on a metallic mast (it will only marginally disturb the pattern). Then extend the mast from there with a non-metallic material for the vertically polarized antenna.

Yep, that would work.

They really only need to be about 6-1/2' apart, so if you used a standard HD steel mast out of the tower to support the horizontal antenna and extended that just 4' or so with a fibreglas mast fitted to the steel one, you should be all set if you put the vertical beam up near the top of the fibreglas extension.

Why do some people use a non-metallic mast and then just run the coax along the non-metallic mast??? Do they use magical non-metallic coaxial cable?

If the mast is an issue affecting pattern, what causes the coax to NOT be an issue for some of us?

What I do is use an offset boom on a crossover plate with metal masts. My vertically polarized antenna is set out a few feet (at VHF) from the mast, and the coax follows the masts. I have, in some installations, brought the coax cables out the antenna rear away from the reflector and down, behind everything.

If I could buy some of that electrically invisible coax my neighbor has, I would use a non-metallic mast and tape the no-metal-inside coax to it just like he does. :-) He went through a lot of work to buy fiberglass mast, and then he just taped the coaxial cables along it.

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